| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 28°F | 47°F | 37°F | 2.7" |
| February | 29°F | 50°F | 38°F | 2.3" |
| March | 37°F | 60°F | 47°F | 3.2" |
| April | 47°F | 71°F | 58°F | 3.4" |
| May | 56°F | 78°F | 67°F | 4.6" |
| June | 67°F | 87°F | 77°F | 5.3" |
| July | 72°F | 91°F | 81°F | 4.2" |
| August | 70°F | 90°F | 79°F | 3.2" |
| September | 63°F | 83°F | 72°F | 3.5" |
| October | 52°F | 72°F | 61°F | 5.0" |
| November | 40°F | 61°F | 50°F | 2.5" |
| December | 33°F | 52°F | 42°F | 3.8" |
| Index | Columbia Heights | Washington | District of Columbia |
| Air quality index | 47 | 47 | 49 |
| Pollution index | 5,554,010 | 5,554,010 | 5,554,010 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 209 |
| Days with moderate air quality | 145 |
| Days w/ poor A.Q. for sensitive groups | 10 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.004% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Maryland City, MD | 17,681 | 46 | 8.0% |
| North Laurel, MD | 24,856 | 46 | 8.0% |
| Hybla Valley, VA | 18,438 | 47 | 6.0% |
| Lincolnia, VA | 22,579 | 47 | 6.0% |
| Ravensworth, VA | 2,841 | 47 | 6.0% |
| Washington, DC | 701,974 | 47 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Vancouver, BC | 694,440 | n/a | |
| Boston, MA | 689,326 | 43 | 14.0% |
| Denver, CO | 715,878 | 58 | 16.0% |
| El Paso, TX | 679,879 | 53 | 6.0% |
| Detroit, MI | 672,351 | 56 | 12.0% |
| Washington, DC | 701,974 | 47 | 6.0% |
Here are the best places to live in District of Columbia
These are the 10 cheapest cities in District of Columbia
These are the largest cities in District of Columbia
See the best places to live in Washington